Re: sata_sil, writing bug with multiple cards?

[Tejun Heo <htejun@gmail.com>]

Alan Cox wrote:
>> # Make a RAID5 array of 3 out of the 4 drives I'll eventually be using
>> mdadm --create /dev/md6 --chunk=64 --level=raid5 --raid-devices=4 /dev/sda1 
>> /dev/sdb1 /dev/sdc1 missing
>> # Make the FS
>> mkfs.ext3 /dev/md6
>> # Test
>> cp KNOPPIX_V5.1.0CD-2006-12-30-EN.iso kn1.iso
>> cp kn1.iso kn2.iso
>> cp kn2.iso kn3.iso
>> cp kn3.iso kn4.iso
>> # Check
>> md5sum *.iso
>> eea5ecb53f1c6a397bcfeedc2fd42c64  kn1.iso
>> 0360941210aa2d7159999e37c636f8cb  kn2.iso
>> md5sum: kn3.iso: Input/output error
>> 86b008915fe02569a513b6c5ec45a523  kn4.iso 
> 
> Not suprised to be honest. We have a large number of reports that are all
> of the following form
> 
> 	"Nvidia chipset, Silicon Image SATA, corruption"
> 
> and several reports that BIOS updates fixed it. Unfortunately we don't
> know what the BIOS updates do (or indeed if what they do is board
> specific) or how to work around it otherwise.

I thought good number of those were the IOMMU bug but I could be
mistaken.  Considering the large number of sata_sil's in the field, it's
a bit surprising to see we still have this kind of problem.  :-(

-- 
tejun